Model-based ocean acoustic passive localization

A model-based approach is developed (theoretically) to solve the passive localization problem. The author investigates the design of a model-based identifier for a shallow water ocean acoustic problem characterized by a normal-mode model. In this problem it is shown how the processor can be structured to estimate the vertical wave numbers directly from measured pressure-field and sound speed measurements thereby eliminating the need for synthetic aperture processing or even a propagation model solution. Finally, the author investigates various special cases of the source localization problem, designing a model-based localizer for each and evaluating the underlying structure with the expectation of gaining more and more insight into the general problem